Originally Posted by
kupo_nut:
“I still say he fixed the chameleon circuit and the car he sat on was actually the Tardis. I can't see the Doctor driving, can you? 
I want to know why there are no ducks on the duckpond, and why Amy didn't recognise the Daleks. I'm guessing Amy has been a ganger a lot longer than since TIA. Especially as the Doctor said it had happened before America”
If Amy was a Ganger before series 5, how on earth did she get pregnant on her wedding night?
Also, there were no ducks on the duck pond because they had decided not to live there long ago... He was using it as a refeerence point to explain something still leaving its effects after being erased. The pond was still called a duck pond, because sometime before then, ducks had lived on it! Simple - no conspiracy involving TARDIS exploding ducks here.
As for the Dalek thing - it is most likely to do with the fact that the crack on her bedroom wall was affecting her mind. Either that of the crack had erased the time the Daleks had invaded (as it was just one crack that happened after the explosion of the TARDIS, it was just everywhere in space and time at the same time). Easily explained by in-episode logic.